Improvement in paper-lining machines



3. F4, FIELD.

PaperLining-Machinos.

Patented Ian. 6, 1854.

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AM. FHOTZI-L/THOGRAPH/l' 00. /V. X fasauknss mom's UNITED STATES I PATENT, I FFIon.

BENJAMIN F. FIELD, OF LEBANON, PENNSYLVANIA.

lMPRO VEMENT IN PAPER-LINING MA l-HNES.

Specification forming part of Letters Patent No. 146,240, dated January 6, 1374; application filed May 14, 1873.

To all whom it may concern: I

Be it known that I, BENJAMIN F. FIELD, of Lebanon, in the county of Lebanon and State of Pennsylvania, have invented a new and paper in continuous lengths, and during the process of manufacture; and it consists, first, in

improvements in the devices for distributing the paste upon the web of lining-paper; second, in an improved device for spreading the lining-paper just before its contact with the straw-board to prevent wrinkles; third, in the mounting of the gage-roller, and in the general arrangement of the devices for presenting and placing the liningpaper.

That others may fully understand my improvements, I will particularly describe them.

In the drawings, A A represent the frame of a suitable paper-machine, and B one of the driers of the same. 0 is the paste-box located upon and extending across the machine in close proximity to one of the driers. D is a pasteroller, with its journal-boxes, mounted at the ends of the paste-box. It dips into and takes up a quantity of paste upon its surface as it revolves, and delivers a part of the same to the roller E, which has its journal-bearings also at the ends of the paste-box. The rollers D E are geared together, and the end of the shaft of roller D has upon it a driving-pulley or other means of receiving motion from the primemover. Th ejournal-boxes of rollers E are made laterally adjustable, so that the distance between said rollers may be regulated at will, and the roller E thereby become a gage to determine and regulate the quantity of paste to be taken over. The adjustable gage-roller E has heretofore been mounted in sliding boxes retained in position by a spring, but such sliding boxes were found to stick sometimes, in

consequence of corrosion; and I therefore mount the boxes 0 upon rollers ff, and adjust them by the screw 1 and spring h. The web 2' of thin lining-paper passes over and in contact with the rollers 1) E, and receives a coating of paste from them. These rollers being geared together, one of them is caused to revolve in a direction opposite to the movement of the web of paper, and its paste istherefore not simply deposited, but is spread by the actionof said roller. At the front side of the pastebox are bearings for a frame, F, upon which are mounted the journals of a small roller, G, which serves to press the web of lining-paper down between the rollers D E, and'increase the extent of surface contact, and prevent the wrinkling of the lining-paper. The extent of this depression may be regulated by a setscrew, 70, but the roller G should never come in contact with rollers D E, or either of them. At the front side of the frame F I place the spreader E. This consists of a bar pivoted in the line of its axis, so that it may conform to the surface of the web of lining-paper. The eli'ective surface of this spreader is corrugated transversely, and said corrugations are in lines radial from some point on the central line of motion, about two and a haIf or three feet backward from said spreader, as shown in Fig. 4. The effect of the constantly-increasing divergence of the corrugations is to spread the paper uniformly and completely to the margin, because each pair of corrugations on either side of the center, and, beginning there, take up the slack existing, added to that spread from the preceding corrugations; consequently a a greater obliquity gives a longer pull or stretch,

which effect would not be produced if parallel oblique corrugations were employed. When required, the frame F, with the spreader H and roller G, may be lifted on the lining-web entirely by means of the chain I attached to y the lifting-arms J, and actuated by the crank K. I mount one or more pressure-rollers, L M, upon swinging arms m, and arrange them to act upon the lining-paper immediately after its contact with the web of straw-board, to press the same together and insure their com plete contact and adherence. These rollers--- can be lifted out of contact whenever required.

r .and over the roller D. Said rollers E and D D revolve in opposite directions, and distribute the paste evenly and thoroughly over the surface of the lining-paper. The lining-paper thence passes beneath the spreader H, whereby all the wrinkles are stretched out smoothly and evenly to the margin, and thence, under the small guide and pressure rollers L M, to the Web of straw-board. The small rollers L M operate not only to guide the lining-paper properly upon the straw-board web, but also press the same down in contact therewith with a gentle pressure, not sufficient to expel the paste, or to cause a violent escape of the water.

The roller M must be adjusted so as to exert but a slight pressure, comparatively, or the paste will be squeezed out by it. I, therefore, have found it advantageous to make said roller hollow, as shown in Fig. 2, and to graduate its pressure by means of an adjusting and adjustable spring, P, connected to the arms m by a wire, 9. Said wires may be readily disconnected when it is desired to raise the rollers away from the web.

Having described my improvement, what I claim as new is 1. The adjustable roller E, mounted upon and combined with the rollers ff placed under the boxes 0 e.

2. The combination of the paste-receptacle, the paste-roll, the gage-roll, and the small roll G arranged with relation to the two other rolls, substantially as and for the purposes described.

3. The spreader H, constructed with transverse corrugations of uniformly-increasing obliquity to the central line, as and for the purpose set forth.

4.. In combination, the lifterJ with the swingframe F bearing the roller G and spreader H, as and for the purpose set forth.

5. In combination with the pasting apparatus and drier B, the pressure-rollers L M mounted at the ends of the swinging arms m m, as set forth.

BENJAMIN F. FIELD. Witnesses:

R. D. 0. SMITH, D. B. VENTRE. 

